Hey, take me along. It's Tanabata.
Go to Tanabata and do what? It's just the same decorations every year. Even if they're good this year...
I'm struggling to understand the 行ってどうすんだ part. I assume it's a contraction of 行ってどうするのだ, but I don't know what the function of どうする is here. Why is it not marked as a question with ?/か
Does it mean "what will you do if you go?". I guess I would have said something like:
言ったらどうするの？ 言ったらどうしよう？ or something like that
Would this be correct? Does it have the same nuance?
I can't understand how the て-form is being used in a place where I would have expected an 'if'.